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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _LINUX_FD1772REG_H |
| 2 | #define _LINUX_FD1772REG_H |
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| 3 | |||
| 4 | /* |
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| 5 | ** WD1772 stuff - originally from the M68K Linux |
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| 6 | * Modified for Archimedes by Dave Gilbert (gilbertd@cs.man.ac.uk) |
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| 7 | */ |
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| 8 | |||
| 9 | /* register codes */ |
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| 10 | |||
| 11 | #define FDC1772SELREG_STP (0x80) /* command/status register */ |
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| 12 | #define FDC1772SELREG_TRA (0x82) /* track register */ |
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| 13 | #define FDC1772SELREG_SEC (0x84) /* sector register */ |
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| 14 | #define FDC1772SELREG_DTA (0x86) /* data register */ |
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| 15 | |||
| 16 | /* register names for FDC1772_READ/WRITE macros */ |
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| 17 | |||
| 18 | #define FDC1772REG_CMD 0 |
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| 19 | #define FDC1772REG_STATUS 0 |
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| 20 | #define FDC1772REG_TRACK 2 |
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| 21 | #define FDC1772REG_SECTOR 4 |
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| 22 | #define FDC1772REG_DATA 6 |
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| 23 | |||
| 24 | /* command opcodes */ |
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| 25 | |||
| 26 | #define FDC1772CMD_RESTORE (0x00) /* - */ |
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| 27 | #define FDC1772CMD_SEEK (0x10) /* | */ |
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| 28 | #define FDC1772CMD_STEP (0x20) /* | TYP 1 Commands */ |
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| 29 | #define FDC1772CMD_STIN (0x40) /* | */ |
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| 30 | #define FDC1772CMD_STOT (0x60) /* - */ |
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| 31 | #define FDC1772CMD_RDSEC (0x80) /* - TYP 2 Commands */ |
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| 32 | #define FDC1772CMD_WRSEC (0xa0) /* - " */ |
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| 33 | #define FDC1772CMD_RDADR (0xc0) /* - */ |
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| 34 | #define FDC1772CMD_RDTRA (0xe0) /* | TYP 3 Commands */ |
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| 35 | #define FDC1772CMD_WRTRA (0xf0) /* - */ |
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| 36 | #define FDC1772CMD_FORCI (0xd0) /* - TYP 4 Command */ |
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| 37 | |||
| 38 | /* command modifier bits */ |
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| 39 | |||
| 40 | #define FDC1772CMDADD_SR6 (0x00) /* step rate settings */ |
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| 41 | #define FDC1772CMDADD_SR12 (0x01) |
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| 42 | #define FDC1772CMDADD_SR2 (0x02) |
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| 43 | #define FDC1772CMDADD_SR3 (0x03) |
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| 44 | #define FDC1772CMDADD_V (0x04) /* verify */ |
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| 45 | #define FDC1772CMDADD_H (0x08) /* wait for spin-up */ |
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| 46 | #define FDC1772CMDADD_U (0x10) /* update track register */ |
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| 47 | #define FDC1772CMDADD_M (0x10) /* multiple sector access */ |
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| 48 | #define FDC1772CMDADD_E (0x04) /* head settling flag */ |
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| 49 | #define FDC1772CMDADD_P (0x02) /* precompensation */ |
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| 50 | #define FDC1772CMDADD_A0 (0x01) /* DAM flag */ |
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| 51 | |||
| 52 | /* status register bits */ |
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| 53 | |||
| 54 | #define FDC1772STAT_MOTORON (0x80) /* motor on */ |
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| 55 | #define FDC1772STAT_WPROT (0x40) /* write protected (FDC1772CMD_WR*) */ |
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| 56 | #define FDC1772STAT_SPINUP (0x20) /* motor speed stable (Type I) */ |
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| 57 | #define FDC1772STAT_DELDAM (0x20) /* sector has deleted DAM (Type II+III) */ |
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| 58 | #define FDC1772STAT_RECNF (0x10) /* record not found */ |
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| 59 | #define FDC1772STAT_CRC (0x08) /* CRC error */ |
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| 60 | #define FDC1772STAT_TR00 (0x04) /* Track 00 flag (Type I) */ |
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| 61 | #define FDC1772STAT_LOST (0x04) /* Lost Data (Type II+III) */ |
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| 62 | #define FDC1772STAT_IDX (0x02) /* Index status (Type I) */ |
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| 63 | #define FDC1772STAT_DRQ (0x02) /* DRQ status (Type II+III) */ |
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| 64 | #define FDC1772STAT_BUSY (0x01) /* FDC1772 is busy */ |
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| 65 | |||
| 66 | |||
| 67 | /* PSG Port A Bit Nr 0 .. Side Sel .. 0 -> Side 1 1 -> Side 2 */ |
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| 68 | #define DSKSIDE (0x01) |
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| 69 | |||
| 70 | #define DSKDRVNONE (0x06) |
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| 71 | #define DSKDRV0 (0x02) |
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| 72 | #define DSKDRV1 (0x04) |
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| 73 | |||
| 74 | /* step rates */ |
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| 75 | #define FDC1772STEP_6 0x00 |
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| 76 | #define FDC1772STEP_12 0x01 |
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| 77 | #define FDC1772STEP_2 0x02 |
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| 78 | #define FDC1772STEP_3 0x03 |
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| 79 | |||
| 80 | #endif |